Do _DIGITAL_ tv's have a problem with channel 2?
Watching over-the-air tv. Can pick-up channel 2(which broadcasts on channel 2) using large antenna and digital-to-analog converter and analog tv. Channel 2 is a strong(green) signal. When I attached the antenna to a new DIGITAL tv then scan, can not get channel 2 using new tv. What is wrong with the DIGITAL TV?
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Is the TV set in the off air mode, or perhaps it is in the cable mode instead. (Off air and cable modulation is not the same.)
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In the Phila., pa. area,
Channel 6 broadcasts at the end of the FM band Channel 2 and 12 on the VHF band The other channels on the UHF band After scanning, channels 2 and 12 were _NOT_ detected! Channel 6 was detected! I did a second scan. Channel 2 was not detected but channel 12 was. But channel 12 is too weak to watch. Channel 12 is a green channel and weaker than 2 according to the tvfool TV Signal Analysis. |
Sounds like the tuner in the new TV is not as good as the one in the A to D box.
TV's today are made for cable and sat, OTA tuning is not a priority for the manufactures anymore. |
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The UHF channels were detected. What percent of digital tv's have a weak vhf tuner? |
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I have, however, heard of tuners so poorly made that they interfered with their own reception, particularly on VHF. I've also run across several customers who experienced interference from poorly made HDMI cables/ports and even one customer whose Google ChromeCast caused VHF interference. |
I heard that about 5% of the us population watches over the air tv.
Do tv tuners have a seperate vhf component? |
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The noise level on VHF-Low, real channels 2-6, is higher than on VHF-High. A much stronger signal is needed on 2 than on 12 to overcome the noise. The tvfool report does not take that into consideration. Channel 2 CBS in Chicago was such a problem they had to move up to channel 12. It is not just how strong it is, but how strong it is in comparison to the noise level, which is mostly from electrical interference. The signal must be at least 15 dB stronger than the noise. This is calld SNR, or Signal to Noise Ratio. Quote:
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attached is the channel file.
1 Attachment(s)
Attached is the channel file.
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Thanks for the image of your tvfool report. KJWP on real channel 2 seems very strong, and you are only 12.2 miles away.
Your tvfool report says Wallimhgord, PA; is that really Wallingford PA near the Nether Providence Township Police? What is the model of the converter box? What antenna are you using? Where is it located and how high is it? How long is the coax line from the antenna to the TV? Are you using a preamp? Are there any trees or other buildings in the path of the signals from 48 degrees magnetic? It does sound like the tuner in the TV isn't very good for VHF. It if really is that bad I would consider it defective. Can you return it for a refund or an exchange? Where did you buy it, Walmart? |
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